Optical illusion

As we have seen, it is inside your brain that you actually "see" things. Light is reflected by objects and enters your eye, which then turns it into a message that your brain makes sense of. What your brain tells you you’re seeing often depends on what it expects to see. Sometimes, though, your brain can be tricked into thinking that it sees one thing when it is actually seeing something quite different. Optical illusions are a good example of this. Try bending your brain by ogling one of these optical illusions - but remember to come back to the Kids section when you've finished by going to the main home page and clicking the kids section link.

Optical illusions and explanations kindly supplied by atBristol. To find out more, visit www.youramazingbrain.org.uk